Adds note about max upload size (cloudflare#22774)

* See SPM-2839 for details.

* Adds note about max upload size

---------

Co-authored-by: Duncan-Cloudflare <[email protected]>

Author: 2 people

src/content/docs/cache/concepts/default-cache-behavior.mdx

@@ -59,6 +59,8 @@ Cloudflare’s CDN provides several cache customization options:
 
 <FeatureTable id="network.max_upload_size" />
 
+Customers can reduce the **Maximum Upload Size** from the zone's **Network** page.
+
 If you require a larger upload, group requests smaller than the upload thresholds or upload the full resource through an [unproxied (grey-clouded) DNS record](/dns/proxy-status/).
 
 ### Cacheable size limits

src/content/docs/support/troubleshooting/http-status-codes/4xx-client-error/error-413.mdx

@@ -22,4 +22,6 @@ The upload limit for the Cloudflare API depends on your plan. If you exceed this
 
 <FeatureTable id="network.max_upload_size" />
 
+Keep in mind, customers can reduce the **Maximum Upload Size** from the zone's **Network** page which can cause a `413`.
+
 If you require a larger upload, break up requests into smaller chunks, change your DNS record to [DNS-only](/dns/proxy-status/#dns-only-records), or [upgrade your plan](/billing/change-plan/).